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Removal and Replacement
WFM 90 and WFM 91 Service Manual
6–17
Align the Backlight and
Input boards into the
slots of the bottom cover
Backlight
board
Input board
assembly
Figure 6–6: Installing the Bottom board
To remove the Backlight board, perform the following procedure:
1. Remove the top cover. Refer to Top Cover on page 6–7.
2. Remove the battery cover. Refer to Battery Cover on page 6–18.
3. Lift on the Bottom board while pressing on the battery connector in the
battery compartment.
4. Gently pull the Backlight board from the back of the Bottom board.
To replace the Backlight board, perform the following procedure:
1. Be sure that the Backlight board shield is in place if you have replaced the
Backlight board.
2. Install the Backlight board into the back of the Bottom board.
3. Align the Backlight and Input boards with the slots in the bottom cover and
gently slide the boards into the bottom cover.
Backlight Board